<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title></title>
    <script>
    //粒度
    let [json, arr, num, str]=[{a: 12, b: 5}, [12,5,8], 8, 'cxzcv'];

    console.log(json,arr,num,str);
    </script>
  </head>
  <body>

  </body>
</html>
